Question

If adding from 1 to 50 then the answer?
1+ 2+ 3+ 4+ ....... 49 + 50=

Answer 1

Answer:

1+2+3+4+…..+50 is an Arithmetic Progression,

The sum of 1+2+3+4+………… +n terms is given by the formula

The sum to n terms Sn is given by,

Where n is the number of terms

By substituting n = 50

,

Answer 2

Step-by-step explanation:

1, 2, 3, 4, 5, ..... 45, 46, 47, 48, 49, 50

and imagine that you are going to add them, starting at both ends and working to the middle.

1 + 50 = 51

2 + 49 = 51

3 + 48 = 51

4 + 47 = 51

Altogether you have 51, twenty-five times so the total of the integers from one to fifty is 51 x 25 = 1275